KR101497880B1

KR101497880B1 - The needle valve and venturi tube all-in-one type gas saver

Info

Publication number: KR101497880B1
Application number: KR20140133986A
Authority: KR
Inventors: 신영식
Original assignee: 신영식
Priority date: 2014-10-06
Filing date: 2014-10-06
Publication date: 2015-03-04

Abstract

The present invention relates to a needle valve and a mixer all-in-one type gas saver. And the configuration comprises: an oxygen input port (30) and a gas input port (40) which are parallely located in the inner portion of a housing (10); a venturi tube (50) which is mounted in the rear direction of an oxygen needle valve (32); a torch (70) which is supplied with the mixing gas for the gas and oxygen; a mixing gas output line (51) which is connected to a backfire prevention arrestor (52); a mixing gas output port (53) which is formed in the direct direction of the backfire prevention arrestor (52); a gas solenoid valve (41) which is mounted in the direct upper part of the gas input port (40); a gas needle valve (42) which is mounted in the direct upper part of the gas solenoid valve (41) and supplies the mixing gas for the gas and oxygen to the torch (70). The present invention provides the needle valve and the mixer all-in-one type gas saver, which enables to prepare stable working conditions and to simplify a manufacturing process.

Description

[0001] The present invention relates to a needle valve and a venturi tube all-in-one type gas saver,

More particularly, the present invention relates to a gas sieve, and more particularly, a venturi tube in which oxygen and gas are mixed is formed integrally on the rear side of an oxygen needle valve, and various connecting parts are minimized to reduce a leak point where a mixed gas can leak The inner diameter of the handle of the torch is formed to be equal to the inner diameter of the firebox to continuously produce a stable and constant size flame as well as to simplify the manufacturing process as well as to form a more stable working environment, And more particularly to a needle valve and a mixer integrated gas saber equipped with a split handle for light weight of the handle.

The gas saver to which the present invention belongs is a gas saver in which a worker uses a torch to reduce waste of oxygen and gas supplied due to unnecessary ignition and improper ignition during brazing, soldering and welding using a torch. As the pre-set oxygen and gas are supplied to the torch and the spark is generated at the spark plug, when the torch is brought close to the spark plug, a flame is automatically generated in the torch. When the work is completed, simply putting the torch on the torch hanger , And a flame automatic generation and erase device in which the flame is automatically erased.

In the joining techniques such as brazing, soldering, and welding, a flame is generally used as a heating source through the reaction of oxygen and gas. In order to adjust the intensity of the flame, the supply amount of oxygen and gas And the optimum state of the mixed gas is made and used.

However, the optimal flame required for welding is obtained from the experience of the skilled person, and it is a reality that it is not easy for the beginner to make the optimum flame, and consumes a lot of oxygen and gas in the process of making the flame. On the other hand, in a factory that produces the same parts in large quantities, it is important that the state of flame applied during welding is kept the same for quality uniformity. It is very difficult to maintain the same flame of the heating source to be.

On the other hand, when the intensity of the flame is abnormally changed due to abnormal supply of oxygen and gas during the welding process, the flame must be quickly shut off to protect the worker as well as to protect the workpiece, The novice workers have difficulty in welding because they are unable to properly cope with the initial response in case of a sudden accident.

The applicant and inventor of the present invention, "Shin Young-sik", recognized the situation of this industry and made considerable efforts to solve the technical problems of the gas saver which is the gas saving device for welding machine. Patent No. 10-0558648 entitled " Saving device "and patent No. 10-1254656" Automatic shutoff type gas saving device for welding machine "to contribute to industrial development.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art. That is, by setting the intensity and size of the flame used in the bonding process in advance according to the type of work, it is possible not only to generate an optimal flame for the torch by a simple operation in which the operator removes the torch from the torch hanger, The needle valve is integrally formed at the rear of the oxygen needle valve to minimize the number of various connection parts to thereby reduce the leak point where the mixed gas can leak, thereby simplifying the manufacturing process as well as providing a more stable working environment. Mix gasifier.

Further, in order to maintain the intensity and the size of the flame constant, the inner diameter of the torch handle through which the mixed gas is passed is formed to be the same as that of the counterflow channel, and the torch handle is made lighter and more beautiful And to provide a needle valve and a mixer-integrated gas saver in which a split handle is formed to reduce the fatigue of an operator.

On the other hand, when the torch is detached from the torch hanger due to the nature of the gas saver, the mixed gas is supplied to the torch so that the torch is prevented from being detached from the torch hanger Valve and mixer integrated gas saver.

A specific means of the needle valve and the mixer integrated gas syringe according to the present invention is characterized in that the oxygen input port 30 and the gas input port 40 are disposed in parallel in the housing 10, An oxygen solenoid valve 31 which is opened and closed in accordance with a signal from the control unit 13 is mounted in the upper chamber and an oxygen needle valve 32 is mounted in an upper right chamber of the oxygen solenoid valve 31, A venturi tube 50 is mounted at the rear of the venturi tube 50 and a mixed gas output line 51 drawn out of the venturi tube 50 is connected to a backflow prevention device 52, A gas solenoid valve 41 which is opened or closed in accordance with a signal from the control unit 13 is mounted on the gas inlet port 40 in the upper portion of the gas inlet port 40, A gas needle valve (42) is mounted in the upper chamber, and the gas needle valve The venturi pipe 50 and the venturi pipe 50 are communicated with each other through a gas supply line 43 so that a mixture gas of oxygen and gas is supplied to the torch 70. In the upper part of the venturi pipe 50, The torch hanger 20 is rotatably installed on the mounting plate 12 through a hinge 24 and a crank hole 71 of the torch 70 is formed on one side of the torch hanger 20 An operating stick 22 for shorting the micro switch 23 mounted on the lower portion of the mounting plate 12 is formed on the other side of the torch hanger 20, A furnace passage 72 having a constant inner diameter D is joined to the furnace 71 of the furnace 70 and a furnace passage 73 having the same inner diameter D 'as the furnace passage 72 is connected to the furnace passage 72, And a plurality of split knobs 74 and a plurality of metal fittings 75 are mounted on the outer circumferential surface of the handle flow path 73 while being intersected with each other.

The needle valve and the mixer integrated gas syringe according to the present invention can easily produce the necessary oxygen and gas mixing ratios according to the type of work, even for the novice operator, and thus it is possible to produce an optimal product. In addition, even if a large number of workers are employed in a place where a same part is produced in a large quantity, the use of the present invention can maintain the same state of flame used in the welding operation, It is effective.

The supply condition of the venturi pipe 50 provided integrally with the oxygen needle valve 32 rearward of the oxygen needle valve 32 is such that the supply condition of the oxygen as well as the oxygen The venturi tube 50 is integrally formed at the rear of the oxygen needle valve 32 so that the number of the various connecting parts is minimized so that the mixed gas The leakage point that can be leaked is reduced, so that a more stable working environment is created, and the manufacturing process is also simplified, thereby making it possible to secure profitability and work stability at the same time.

The problem that the torch 70 is removed against the intention of the operator is solved because the torch 71 is firmly attached due to the mounting groove 21 of the torch hanger 20 to which the torch 70 is mounted, Since the split handle 74 and the metal fitting 75 are mounted on the handle of the handle 70 so as to intersect with each other, a beautiful handle can be formed and the handle can be lightened to reduce the fatigue of the operator holding the torch 70 for a long time do.

On the other hand, by forming the counterflow passage 72 of the torch 70 and the inner diameter D, D 'of the handle passage 73 to be the same (D = D'), the flow of the mixed gas naturally flows without bending, The intensity and magnitude of the flame generated in the combustion chamber 71 are kept constant.

1 is an internal perspective view for explaining a problem with a gas leakage point of a conventional gas saver;
FIG. 2 is a perspective view showing a combined valve assembly of a gas valve integrated with a needle valve according to the present invention;
Figure 3 is an internal perspective view of the needle valve and mixer integrated gas saber according to the present invention.
Figure 4 is a cross-sectional view of AA shown in Figure 3;
5 is a side view for explaining the split handle in the present invention
6 is a side view for explaining a conventional round bar handle

First, FIG. 1 is an internal perspective view for explaining a problem with a gas leakage point of a conventional gas saver. As shown in FIG. 1, various components for supplying oxygen and gas are connected to the inside of the housing 10 .

An oxygen solenoid valve 31 is mounted above the oxygen input port 30 to which oxygen is input and a first connection part 90 for connecting the pipe to the rear of the oxygen solenoid valve 31, The second connecting part 91 and the third connecting part 92 are continuously engaged and the fourth connecting part 93 and the fifth connecting part 92 are connected to both sides of the oxygen needle valve 32 to determine the direction of the pipe, 94, and further, the sixth connecting part 95 is coupled to the venturi tube 50.

A gas solenoid valve 41 is mounted above the gas inlet port 40 to which the gas is input and is connected to the rear of the gas solenoid valve 41

A second connecting part 91 and a third connecting part 92 are connected to both sides of the backwasher 52 to connect the backwasher 52 to the first connecting part 90 for connecting the piping, A fourth connecting part 93 and a fifth connecting part 94 are coupled to both sides of the gas needle valve 42 which are coupled and positioned behind the back-flow preventer 52 to determine the direction of the pipe And further the gas supply line 43 connected to the venturi pipe 50 is connected, the sixth connection part 95 is engaged.

As such, the conventional gas saber is equipped with many connecting parts, which are leakage points. In other words, gases such as oxygen and gas should not leak out to ensure the stability of the welding operation. However, many connection parts 90, 91, 92, 93, 94, 95, 96 are used in the process of connecting the piping to the piping or backwasher 52, the venturi pipe 50, As the number increases, the stability of the work is significantly reduced.

On the other hand, an increase in the number of connected parts leads to an increase in the production unit price, and affects the increase of the working time and the work process. In addition to securing the stability of the welding operation, a new gas saver Is becoming a reality in the industry.

Hereinafter, the technical structure and effects of a preferred embodiment of the present invention, which can solve the conventional problems, will be described with reference to the accompanying drawings.

2 is a combined perspective view of a needle valve and mixer integrated gas saber according to the present invention. 2, when the torch 70 is detached from the torch hanger 20, a mixed gas in which oxygen and gas are mixed through a hose connected to the torch 70 is supplied to the torch 70, When the tip of the supplied torch 70 is brought close to the spark plug 60, a flame is generated in the torch 70 due to the spark of the spark plug 60 in which the spark is continuously generated together with the detachment of the torch 70 It is a gas saver.

As shown in FIG. 2, a power supply unit 11 is installed on the front surface of the housing 10 to turn on / off the gas saver. An oxygen needle valve 32 and a gas needle valve 42 which are manually adjustable by a worker are protruded below the power source unit 11. The oxygen needle valve 32 and the gas needle valve 42 are provided on the bottom surface of the housing 10, A gas needle valve 42 and an oxygen input port 30 and a gas input port 40 which are mounted in direct contact with the gas needle valve 42 are installed in the gas inlet port 40. Between the oxygen input port 30 and the gas input port 40, And a mixed gas output port 53 through which the mixed gas is discharged.

A torch hanger 20 is mounted on the side of the housing 10 to receive the torch 70 and an ignition plug 60 for generating a flame on the torch 70 is formed on the upper surface of the housing 10 And a gas collecting part 61 is installed around the spark plug 60 to collect a mixed gas ejected from the torch 70 and to easily generate a flame.

FIG. 3 is a perspective view for explaining the inside of the needle valve and the mixer integrated gas syringe according to the present invention in detail. As shown in FIG. 3, an oxygen solenoid valve 31 is mounted in a chamber right above the oxygen input port 30 And the oxygen solenoid valve 31 opens and closes the oxygen input port 30 in response to a signal from the control unit 13 mounted in the housing 10. The opening of the oxygen solenoid valve 31 opens the torch 70, And the closing is automatically closed when the torch 70 is mounted on the torch hanger 20 or is automatically closed when the malfunctioning condition predetermined to the control unit 13 is satisfied when the oxygen is abnormally supplied.

In addition, an oxygen needle valve 32 is mounted in the upper right chamber of the oxygen solenoid valve 31. The oxygen needle valve 32 sets an appropriate supply amount of oxygen according to the characteristics of the base material and the type of the tip of the torch 70 in the joining work being carried out, And manually controlling the supply amount of oxygen so as to generate the intensity and magnitude of the flame suitable. On the other hand, when the dangerous state in which the oxygen solenoid valve 31 is not automatically closed occurs, the oxygen needle valve 32 manually turns the oxygen needle valve 32 to close the oxygen input port 30 Function.

Further, as shown in Fig. 3, a venturi tube 50 is mounted to the rear of the oxygen needle valve 32. As shown in Fig. The venturi pipe 50 is a mixer of oxygen and gas that mixes the supplied oxygen and gas and transfers the oxygen and the gas to the torch 70. As shown in FIG. 3, the venturi pipe 50 is provided with a gas needle valve 42, And a gas supply line 43 for supplying a gas supplied along the venturi pipe 50 is installed so that oxygen and gas are mixed and mixed inside the venturi pipe 50.

3, the gas input port 40 is installed in parallel with the oxygen input port 30, and a gas solenoid valve 41 is mounted in the upper right chamber of the gas input port 40. As shown in FIG. The gas solenoid valve 41 opens and closes the gas input port 40 in response to a signal from the control unit 13 mounted inside the housing 10 so that the torch 70 is opened to the torch hanger 20, And the closing is automatically closed when the torch 70 is mounted on the torch hanger 20 or when the malfunctioning condition preset in the control unit 13 is satisfied when the gas is abnormally supplied.

Further, a gas needle valve 42 is mounted in the upper right chamber of the gas solenoid valve 41. The gas needle valve 42 sets a supply amount of a suitable gas according to the characteristics of the base material and the type of the tip of the torch 70 in the joining work being carried out, And manually controlling the supply amount of the gas so as to generate the intensity and magnitude of the flame suitable for returning. On the other hand, when the gas needle valve 42 is in a dangerous state in which the gas solenoid valve 41 is not automatically closed, the operator manually turns the gas needle valve 42 to close the gas input port 40 Function.

As shown in FIG. 3, a mixed gas output port 53 is disposed between the oxygen input port 30 and the gas input port 40 to discharge a mixed gas of oxygen and gas. The gas is delivered to the torch 70 along the outer hose connected to the mixed gas output port 53 to be ignited. A backfire prevention device 52 is mounted on the upper portion of the mixed gas output port 53. The backfire prevention unit 52 prevents the flame remaining in the firebox 71 from being reversed along the hose in the course of extinguishing the fire from the torch 70, and prevents the backlash. On the other hand, a mixture gas output line 51 is connected to the upper portion of the backflow prevention device 52 and connected to the venturi pipe 50.

3, a mounting plate 12 is disposed on an upper portion of the venturi tube 50, and the mounting plate 12 is rotatably installed with a torch hanger 20 through a hinge 24 . A mounting groove 21 for receiving the torch 70 is formed on one side of the torch hanger 20 and a mounting groove 21 for mounting the microchip 20 mounted on the mounting plate 12 directly below the torch hanger 20, An operation stick 22 is formed to short-circuit the switch 23. [

Therefore, when the torch 70 is detached from the torch hanger 20 for ignition, the torch hanger 20 connected to the spring 25 on one side of the mounting plate 12, due to the elasticity of the spring 25, The bottom surface of the operating stick 22 presses the lever of the microswitch 23 so that the oxygen solenoid valve 31 and the solenoid valve 31 are rotated in the counterclockwise direction about the hinge 24 as indicated by the chain double- The open signal of the gas solenoid valve 41 is sent to the control unit 13 so that the mixture gas of oxygen and gas is supplied to the torch 70 so that the flame is ignited on the torch.

Meanwhile, a mounting groove 21 is formed on one side of the torch hanger 20 according to the present invention so as to catch the fire hole 71 of the torch. The operator does not remove the torch 70 until the torch 70 is lifted up by the operator in a state where the torch 70 of the torch 70 is mounted on the mounting groove 21 in consideration of the fact that the mounting groove 21 has a concave shape Structure. That is, the firebox 71 is stably installed in the concave mounting groove 21 so that the torch 70 is not separated by the external force during the work regardless of the intention of the operator. This is a structure for solving the problem that the torch 70 is easily detached when the torch 70 hits the body due to the action of the worker during the operation by merely mounting the torch 70 conventionally.

FIG. 4 is a cross-sectional view taken along the line A-A shown in FIG. 3. FIG. 3 illustrates a process of mixing oxygen and gas in the venturi tube 50. 4, the oxygen supplied through the oxygen input port 30 is supplied to the venturi pipe 50 provided at the back of the oxygen needle valve 32, and the gas needle valve 42 The gas supplied through the gas supply line 43 is supplied to the venturi pipe 50 along with the gas supply line 43 and then mixed with oxygen and gas in the venturi pipe 50 as indicated by a dotted line The mixed gas is supplied to the torch 70 through the backwasher 52 and the mixed gas output port 53 along the mixed gas output line 51.

At this time, the determination of the flame state is made possible by adjusting the supply amount of oxygen and gas in the venturi pipe (50). That is, when the oxygen needle valve 32 is turned to the left or to the right by dialing as shown in FIG. 4, the supply condition of the venturi pipe 50 is changed, so that the supply condition of the oxygen as well as the gas supply condition can be adjusted simultaneously. The adjustment of the supply conditions of the gas is initially regulated through the gas needle valve 42 and then the supply conditions of the final mixed gas are regulated through the oxygen needle valve 32 as previously described, The control of the supply conditions of the mixed gas can be controlled more finely.

5 is a side view for explaining the split handle 74 of the present invention. 5A is a sectional side view of the torch 70. The crater passage 71 is connected to a crater passage 72 having a predetermined inner diameter D and the crater passage 72 is provided with a constant inner diameter D ' The handle flow path 73 is joined. The inner diameter D of the hearth passage 72 and the inner diameter D 'of the handle passage 73 are formed to have the same size (D = D') so that the flow of the mixed gas is naturally supplied without bending.

6 is a side view for explaining the conventional round bar handle 80. The conventional torch 70 has a crater passage 72 having a constant inner diameter D and a constant inner diameter D " The flow of the mixed gas to be supplied is expressed as a curved irregular flow due to the cross-sectional shape having the stepped portion, with the inner diameters thereof being different from each other (D <D ") in the flow path of the rod- There is a problem that the intensity and size of the flames generated in the crater 71 are irregularly deformed.

Therefore, in order to maintain the strength and the size of the flame generated in the furnace 71 constant, the inner diameter D of the furnace passage 72 and the inner diameter D 'of the handle passage 73 are set to the same size (D = D ').

6 (a), the conventional round bar handle 80 is used as a medium connection port 81 for connection with the counterflow channel 72, and the hose connection port 82 is also used for connection with the hose. Is used as a medium, which means that there are a plurality of leakage points of the mixed gas. Accordingly, in the present invention, as shown in FIG. 5 (a), the hearth flow path 72 and the handle flow path 73 are bonded to each other through the brazing technique to reduce the mixed gas leakage point, Supply is realized.

5 (a), on the outer circumferential surface of the handle channel 73, there are provided a plurality of split knobs 74 and a plurality of brackets 75 positioned between the split knobs 74, The handle 74 and the metal fitting 75 are mounted while being intersected with each other, and then fixed by the nut 76. [ Considering that the split knob 74 is a lightweight plastic material, the weight of the torch 70 is relieved by the operator who has to hold the torch 70 by hand for a long time. In addition, a metal fitting 75 and a split handle 74 made of plastic are mounted at an intersection to impart a feel to the handle.

As described above, since the needle valve and the mixer integrated gas syringe according to the present invention can easily make the mixing ratio of oxygen and gas necessary for the novice operator depending on the type of work, There are advantages. In addition, even if a large number of workers are employed in a place where a same part is produced in a large quantity, the use of the present invention can maintain the same state of flame used in the welding operation, It is effective.

In addition, it is possible to finely control the mixed gas of oxygen and gas due to the change in the supply condition of the venturi tube 50 controlled through the oxygen needle valve 32, The problem of the torch (70) being detached against the intention of the operator is solved because the torch (71) is firmly mounted by the groove (21).

Further, since the split knob 74 and the metal fitting 75 are mounted on the handle of the torch 70 so as to intersect with each other, a beautiful handle can be formed, and the weight of the handle can be made lightweight so that the fatigue of the operator holding the torch 70 for a long time . On the other hand, by forming the counterflow passage 72 of the torch 70 and the inner diameter D, D 'of the handle passage 73 to be the same (D = D'), the flow of the mixed gas is naturally supplied without bending, The intensity and magnitude of the flame generated in the combustion chamber 71 are kept constant.

10: Housing
11:
12: Mounting plate
13:
20: Torch hook
21: Mounting groove
22: Working stick
23: Micro switch
24: Hinge
25: spring
30: Oxygen input port
31: Oxygen solenoid valve
32: Oxygen needle valve
40: Gas input port
41: Gas solenoid valve
42: Gas needle valve
43: gas supply line
50: Venturi tube
51: Mixed gas output line
52: Backfire protection
53: Mixed gas output port
60: spark plug
61: gas collecting part
70: Torch
71: Crater
72: Hwaseong Euros
73: Handle channel
74: Split handle
75: Bracket
76: Nut
80: Round bar handle
81: Culvert connection
82: Hose connector
90: First connection part
91: Second connection part
92: Third connection part
93: Fourth connection part
94: Fifth connection part
95: 6th connection part
D, D ', D ": inner diameter

Claims

An oxygen input port 30 and a gas input port 40 are disposed in parallel in the housing 10 and an oxygen solenoid valve 30 is provided in an upper right chamber of the oxygen input port 30 in accordance with a signal from the control unit 13. [ An oxygen needle valve 32 is mounted on the upper portion of the oxygen solenoid valve 31 and a venturi pipe 50 is mounted on the rear side of the oxygen needle valve 32, The mixed gas output line 51 drawn out of the pipe 50 is connected to the backwasher 52 and a mixed gas output port 53 is formed right below the backwasher 52. The gas inlet port A gas solenoid valve 41 which is opened or closed in accordance with a signal from the control unit 13 is mounted on the upper side of the gas solenoid valve 41. A gas needle valve 42 is mounted on the upper side of the gas solenoid valve 41, The valve 42 and the venturi pipe 50 communicate with each other through the gas supply line 43, A mixed gas of the switch is supplied to the torch 70,
A mounting plate 12 is disposed on the upper portion of the venturi tube 50. The mounting plate 12 is rotatably mounted on the mounting plate 12 through a hinge 24, A mounting groove 21 is formed on the other side of the mounting plate 12 so as not to allow the firebox 71 of the torch 70 to be detached and a micro switch 23 mounted on the lower portion of the mounting plate 12 is short- And an operating stick 22 is formed in the crankcase 72. A crankcase flow path 72 having a predetermined inner diameter D is joined to the crater 71 of the torch 70, (D ') are joined to each other, and a plurality of split knobs (74) and a plurality of metal plates (75) are mounted on the outer peripheral surface of the handle channel (73) while being intersected with each other. Needle valve and mixer integrated gas saver.

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